Levulinic
乙酰丙
🗣️ 情景例句
Will you be so kind as to help me out of the difficulty?
帮助我克服困难，好吗？
Have you been busy with schoolwork?
学校的功课很忙吗？
In the new country he became absorbed in making a new life for the two of us, so that he gradually ceased to grieve.
在这个新的国家里，父亲专心致志地为我们俩开创一种新的生活，慢慢地不伤心了。